/*
 * Copyright (c) 2012, Willow Garage, Inc.
 * Copyright (c) 2017, Open Source Robotics Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Willow Garage, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <QPainter>
#include <QStringList>
#include <QStyleOptionViewItem>

#include "rviz_common/properties/parse_color.hpp"
#include "rviz_common/properties/color_property.hpp"
#include "rviz_common/properties/color_editor.hpp"

namespace rviz_common
{
namespace properties
{

ColorProperty::ColorProperty(
  const QString & name,
  const QColor & default_value,
  const QString & description,
  Property * parent,
  const char * changed_slot,
  QObject * receiver)
: Property(name, QVariant(), description, parent, changed_slot, receiver),
  color_(default_value)
{
  updateString();
}

bool ColorProperty::setColor(const QColor & new_color)
{
  if (new_color != color_) {
    Q_EMIT aboutToChange();
    color_ = new_color;
    updateString();
    Q_EMIT changed();
    return true;
  }
  return false;
}

bool ColorProperty::setValue(const QVariant & new_value)
{
  if (new_value.type() == QVariant::Color) {
    return setColor(new_value.value<QColor>());
  }

  QColor new_color = parseColor(new_value.toString());
  if (new_color.isValid()) {
    return setColor(new_color);
  }
  return false;
}

void ColorProperty::updateString()
{
  value_ = printColor(color_);
}

bool ColorProperty::paint(
  QPainter * painter,
  const QStyleOptionViewItem & option) const
{
  painter->save();
  QColor color = color_;
  if (!(getViewFlags(0) & Qt::ItemIsEnabled)) {
    color = QColor(200, 200, 200);
    painter->setPen(QColor(Qt::lightGray));
  }
  QString text = value_.toString();
  QRect rect = option.rect;
  ColorEditor::paintColorBox(painter, rect, color);
  rect.adjust(rect.height() + 4, 1, 0, 0);
  painter->drawText(rect, text);

  painter->restore();

  return true;  // return true, since this function has done the painting.
}

QWidget * ColorProperty::createEditor(QWidget * parent, const QStyleOptionViewItem & option)
{
  Q_UNUSED(option);
  ColorEditor * editor = new ColorEditor(this, parent);
  editor->setFrame(false);
  return editor;
}

QColor ColorProperty::getColor() const
{
  return color_;
}

Ogre::ColourValue ColorProperty::getOgreColor() const
{
  return qtToOgre(color_);
}

}  // namespace properties
}  // namespace rviz_common
